There have been some epic EU battles throughout the books, graphic novels, etc. I'd have to say one of my favs would be the battle above Rakata Prime at the end of the first KOTOR game. Feel free to share your opinions!

"There is no such thing as coincidence, only inevitability" - xxxHoLiC

All the Kotor stuff (1), Ulic Qel-Droma vs Sylvar in TOTJ: Redemption is awesome, a lot of the original Clone Wars stuff in the Republic comic line and TPB's (Before the kiddy resent stuff ) Darth Caedus vs Jaina Solo.. to name but a few

This wasn't so much of a battle but when Luke confronts Jacen (Darth Caedus) he holds him in place with the force with out moving his hands and crushes the chair Jacen is sitting in. The quote Luke says is pure gold. "You wouldn't want to see me angry" Awesome!

I'm also reminded of the fight (in the Senate chambers) between Exar Kun and his master (forgot the dude's name) in the TOTJ comics. I didn't particularly care much for the series, but that was quite an epic moment.

"There is something going on in time and space, and beyond time and space, which, whether we like it or not, spells duty." -Winston Churchill

"For of all sad words of tongue or pen, The saddest are these: 'It might have been!'" -John Whittier